{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "In the wetland , nutrient and atrazine relationships with periphyton were weaker , and when found , were often opposite of trends in chambers ."}
{"Chemical": ["atrazine"]}